Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.ijmachtools.2011.08.007
Title: A novel method for determination of the subsurface damage depth in diamond turning of brittle materials
Authors: Yu, D.P.
Wong, Y.S. 
Hong, G.S. 
Keywords: Brittle materials
Critical depth of cut
Diamond turning
Ductile regime machining
Fast tool servo
Subsurface damage
Issue Date: Dec-2011
Citation: Yu, D.P., Wong, Y.S., Hong, G.S. (2011-12). A novel method for determination of the subsurface damage depth in diamond turning of brittle materials. International Journal of Machine Tools and Manufacture 51 (12) : 918-927. ScholarBank@NUS Repository. https://doi.org/10.1016/j.ijmachtools.2011.08.007
Abstract: Micro-structured surfaces on brittle materials, e.g. ceramic and glass, are gaining increasing industrial applications such as optics, semiconductor and biomedical. However, these materials tend to be damaged with brittle fracture in machining. To generate crack-free surfaces, ductile-regime machining should be maintained for the entire micro-structured surface. In ductile-regime machining the material is removed by both plastic deformation and brittle fracture, but the cracks produced are prevented from extending into the finished surface. In this paper, a machining model has been developed for fast tool servo (FTS) diamond turning of micro-structured surfaces on brittle materials. Based on the model, a damaged region analysis method (DRAM) is proposed to determine the subsurface damage depth (Cm) by analyzing the surface damaged region of a machined micro-structured surface with sinusoidal wave along radial direction. Only one micro-structured surface is required to be machined to obtain Cm, which greatly reduces the effort for determination of Cm. With Cm, the maximum feedrate for machining a crack-free micro-structured surface can be determined. Machining experiments have verified the validity of DRAM. © 2011 Elsevier Ltd. All rights reserved.
Source Title: International Journal of Machine Tools and Manufacture
URI: http://scholarbank.nus.edu.sg/handle/10635/84802
ISSN: 08906955
DOI: 10.1016/j.ijmachtools.2011.08.007
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